This module contains various constants relating to the intimate details of the
pickle module, some lengthy comments about the implementation, and a few
useful functions for analyzing pickled data. The contents of this module are
useful for Python core developers who are working on the pickle and
cPickle implementations; ordinary users of the pickle module
probably won’t find the pickletools module relevant.

Outputs a symbolic disassembly of the pickle to the file-like object out,
defaulting to sys.stdout. pickle can be a string or a file-like object.
memo can be a Python dictionary that will be used as the pickle’s memo; it can
be used to perform disassemblies across multiple pickles created by the same
pickler. Successive levels, indicated by MARK opcodes in the stream, are
indented by indentlevel spaces.

Provides an iterator over all of the opcodes in a pickle, returning a
sequence of (opcode,arg,pos) triples. opcode is an instance of an
OpcodeInfo class; arg is the decoded value, as a Python object, of
the opcode’s argument; pos is the position at which this opcode is located.
pickle can be a string or a file-like object.